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Posted by rafael_carbonell on 26-01-2023 00:10

Have found very different patterns of wing venation of the species Trichocera regelationis (if they are correct)... How is that possible? I mean, in other cases, such a large amount of variation would serve to differentiate distinct species whereas in this case it is assumed to be within-species variability?

1) Wikipedia (https://commons.w...ds_-_4.jpg). R4+5 begins in the middle of r-m. Male specimen.

Edited by rafael_carbonell on 26-01-2023 00:24

Posted by rafael_carbonell on 26-01-2023 00:13

2) Site: spessart-fliegen.de (http://www.spessa...s/6/6.html). R4+5 begins in the anterior part of r-m. Male specimen.

Edited by rafael_carbonell on 26-01-2023 00:18

Posted by rafael_carbonell on 26-01-2023 00:18

3) A personal record (https://www.inatu.../102661239). R4+5 begins in the middle of r-m. Female specimen.

Posted by rafael_carbonell on 26-01-2023 00:20

In all three previous examples the link shows other pictures.

Other examples in this site:
Female of Trichocera regelationis (https://diptera.i...ost_335849)
Limoniidae (NL) =>Trichocera regelationis (https://diptera.i...ost_248996)
Trichocera sp. (https://diptera.i...post_91060)

What do you think?

Edited by rafael_carbonell on 26-01-2023 00:37

Posted by Paul Beuk on 26-01-2023 16:29

There is variation in the relative location of the base of r-m on R₄₊₅. What concerns me more about your specimen is the very indistinct clouding at r-m and the very deep fork in M₁₊₂, which make me think you may not have T. regelationis at all...

Posted by rafael_carbonell on 26-01-2023 17:29

Paul, you are right, The fork of M1 & 2 veins is very long. The specimen was identified by Ewa Kozakiewicz looking at genitalia (follow link) but I will comment her that. I wish I could take some barcodes of this specimens to get clear what they are.
Best,
Rafael

Edited by rafael_carbonell on 26-01-2023 22:33

Posted by Andrius on 26-01-2023 22:28

Your specimen doesn't fit the "ideal" T.regelationis and I also have some doubts about the species, also after looking at the other photographs you posted on iNaturalist. In general wing venation in T.regelationis could be rather variable, and the clouding at r-m might be bleak as well, although usually it is visible rather well. Ewa Krzeminska thinks it is T.regelationis, but I am more cautious and would leave it with a question mark. Preparation of a genital fork could help to decide.

Posted by rafael_carbonell on 26-01-2023 22:42

Thanks Andrius, I will prepare the genital fork with the method explained in Krzeminska 2021. Meanwhile, could you take a look at this possible female T.annulata? : https://diptera.i..._id=108782

Edited by rafael_carbonell on 26-01-2023 22:42